Longyearbyen weather in August 2025

Expect 6°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Longyearbyen in August. Check more long-term weather averages for Longyearbyen in August before you book your next holiday to Svalbard in 2025/2026.

6
6°C max day temperature
5
5 hours of sunshine per day
13
13 days with some rainfall
2
2°C min night temperature
23
23 hours of daylight per day
0
No heat & humidity
30
30 mm of monthly rainfall
1
1 (Low) UV index
-1
-1°C sea temperature

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The August weather guide for Svalbard, represented by Longyearbyen, (Longyearbyen) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

How cold is it in Longyearbyen in August?

Daytime temperatures usually reach 6°C in Longyearbyen in August, falling to 2°C at night.

How sunny is it in Longyearbyen in August?

There are normally 5 hours of bright sunshine each day in Longyearbyen in August - that's 23% of daylight hours.

Is the sea cold around Longyearbyen in August?

The average sea temperature around Longyearbyen in August is -1°C.

Does it rain in Longyearbyen in August?

There are usually 13 days with some rain in Longyearbyen in August and the average monthly rainfall is 30mm.

Longyearbyen August sunrise & sunset times

Browse the sunrise and sunset times for Longyearbyen in August 2025. Select a month to view Longyearbyen sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Friday, 1st August 2025	Daylight all day
Saturday, 16th August 2025	Daylight all day
Sunday, 31st August 2025	02:26	21:20

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Svalbard - quick facts
Time difference	UK +1 hour
Language(s)	Norwegian
Currency	Norwegian Krone
Electricity	C + F plug (230V)
Driving side	Right
Why visit?	Nature
Tourist info	Visit Svalbard